“Charcoal pudding shows what looks like titty pouring a kettle with her right.

PM has a few things that are possibly inconclusive (eg Dick holding the sheet in his right hand in “they were startled by a splash” despite being on starboard tack, and again in his right for “it acts as an extra sail” whilst on port tack), but does show Timothy writing with his right hand in “work in the houseboat”.

In my edition of SA there is a small untitled pic of possibly Titty holding a telescope in her right hand to her right eye.

ML in “at work on the dragon” shows Titty and Roger using paintbrushes in their right hands.